diff --git a/types/es-to-primitive/package.json b/types/es-to-primitive/package.json
deleted file mode 100644
index 54d5b8743e..0000000000
--- a/types/es-to-primitive/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-    "private": true,
-    "types": "index",
-    "typesVersions": {
-        "<=3.1": {
-            "*": [
-                "ts3.1/*"
-            ]
-        }
-    }
-}
diff --git a/types/es-to-primitive/ts3.1/es-to-primitive-tests.ts b/types/es-to-primitive/ts3.1/es-to-primitive-tests.ts
deleted file mode 100644
index 7cf5cd4ea4..0000000000
--- a/types/es-to-primitive/ts3.1/es-to-primitive-tests.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-// tslint:disable-next-line:no-relative-import-in-test Rule does not apply to nested typesVersions tests
-import ToPrimitive = require('./');
-// tslint:disable-next-line:no-relative-import-in-test Rule does not apply to nested typesVersions tests
-import ToPrimitiveES5 = require('./es5');
-// tslint:disable-next-line:no-relative-import-in-test Rule does not apply to nested typesVersions tests
-import ToPrimitiveES6 = require('./es2015');
-// tslint:disable-next-line:no-relative-import-in-test Rule does not apply to nested typesVersions tests
-import ToPrimitiveES2015 = require('./es2015');
-
-const any: unknown = undefined;
-
-ToPrimitive.ES5(any);
-ToPrimitive.ES6(any);
-ToPrimitive.ES2015(any);
-
-ToPrimitiveES5(any);
-ToPrimitiveES6(any);
-ToPrimitiveES2015(any);
diff --git a/types/es-to-primitive/ts3.1/es2015.d.ts b/types/es-to-primitive/ts3.1/es2015.d.ts
deleted file mode 100644
index 509b04b559..0000000000
--- a/types/es-to-primitive/ts3.1/es2015.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-declare function ToPrimitive(
-    input: unknown,
-    hint?: typeof String | typeof Number,
-): string | number | boolean | symbol | null | undefined;
-export = ToPrimitive;
diff --git a/types/es-to-primitive/ts3.1/es5.d.ts b/types/es-to-primitive/ts3.1/es5.d.ts
deleted file mode 100644
index 509b04b559..0000000000
--- a/types/es-to-primitive/ts3.1/es5.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-declare function ToPrimitive(
-    input: unknown,
-    hint?: typeof String | typeof Number,
-): string | number | boolean | symbol | null | undefined;
-export = ToPrimitive;
diff --git a/types/es-to-primitive/ts3.1/es6.d.ts b/types/es-to-primitive/ts3.1/es6.d.ts
deleted file mode 100644
index 258b5b0140..0000000000
--- a/types/es-to-primitive/ts3.1/es6.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-import ToPrimitive = require('./es2015');
-/** @deprecated */
-export = ToPrimitive;
diff --git a/types/es-to-primitive/ts3.1/index.d.ts b/types/es-to-primitive/ts3.1/index.d.ts
deleted file mode 100644
index b0bf2023d2..0000000000
--- a/types/es-to-primitive/ts3.1/index.d.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import ES5 = require('./es5');
-import ES6 = require('./es6');
-import ES2015 = require('./es2015');
-
-declare const ToPrimitive: typeof ES2015 & {
-    readonly ES5: typeof ES5;
-    /** @deprecated */
-    readonly ES6: typeof ES6;
-    readonly ES2015: typeof ES2015;
-};
-export = ToPrimitive;
diff --git a/types/es-to-primitive/ts3.1/tsconfig.json b/types/es-to-primitive/ts3.1/tsconfig.json
deleted file mode 100644
index cab37aafca..0000000000
--- a/types/es-to-primitive/ts3.1/tsconfig.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-    "compilerOptions": {
-        "module": "commonjs",
-        "lib": [
-            "es5"
-        ],
-        "noImplicitAny": true,
-        "noImplicitThis": true,
-        "strictFunctionTypes": true,
-        "strictNullChecks": true,
-        "baseUrl": "../../",
-        "typeRoots": [
-            "../../"
-        ],
-        "types": [],
-        "noEmit": true,
-        "forceConsistentCasingInFileNames": true
-    },
-    "files": [
-        "index.d.ts",
-        "es-to-primitive-tests.ts"
-    ]
-}
diff --git a/types/es-to-primitive/ts3.1/tslint.json b/types/es-to-primitive/ts3.1/tslint.json
deleted file mode 100644
index 3db14f85ea..0000000000
--- a/types/es-to-primitive/ts3.1/tslint.json
+++ /dev/null
@@ -1 +0,0 @@
-{ "extends": "dtslint/dt.json" }